Queen's Gambit Declined

198 named lines, ECO D02–D69. The main position arises after1. d4 d5 2. c4 e6.

Line	Games	White / draw / Black
Queen's Gambit Declined (2. c4 e6) D30 · 1. d4 d5 2. c4 e6	127,755	51%44%
Albin Countergambit D08 · 1. d4 d5 2. c4 e5	17,428	50%46%
Austrian Defense D06 · 1. d4 d5 2. c4 c5	10,408	52%44%
Baltic Defense D06 · 1. d4 d5 2. c4 Bf5	17,753	54%43%
Chigorin Defense (2. c4 Nc6) D07 · 1. d4 d5 2. c4 Nc6	14,515	53%43%
Marshall Defense D06 · 1. d4 d5 2. c4 Nf6	71,880	53%42%
Zilbermints Gambit D06 · 1. d4 d5 2. c4 b5	27	78%22%
Baltic Defense, Queen Attack D06 · 1. d4 d5 2. c4 Bf5 3. Qb3	435	60%37%
Chigorin Defense (2… Nc6 3. Nc3) D07 · 1. d4 d5 2. c4 Nc6 3. Nc3	5,552	53%43%
Queen's Knight Variation D31 · 1. d4 d5 2. c4 e6 3. Nc3	74,226	51%44%
Alapin Variation D31 · 1. d4 e6 2. c4 b6 3. Nc3 d5	7	43%14%43%
Austrian Attack, Salvio Countergambit D06 · 1. d4 d5 2. c4 c5 3. dxc5 d4	901	47%49%
Austrian Defense, Gusev Countergambit D06 · 1. d4 d5 2. c4 c5 3. cxd5 Nf6	215	47%49%
Charousek Variation D31 · 1. d4 d5 2. c4 e6 3. Nc3 Be7	1,248	47%45%
Chigorin Defense (3. Nc3 dxc4) D07 · 1. d4 d5 2. c4 Nc6 3. Nc3 dxc4	2,416	53%43%
Chigorin Defense, Exchange Variation D07 · 1. d4 d5 2. c4 Nc6 3. cxd5 Qxd5	2,831	51%45%
Chigorin Defense, Lazard Gambit D07 · 1. d4 d5 2. c4 Nc6 3. Nf3 e5	124	50%46%
Chigorin Defense, Main Line D07 · 1. d4 d5 2. c4 Nc6 3. Nf3 Bg4	942	50%46%
Chigorin Defense, Tartakower Gambit D07 · 1. d4 d5 2. c4 Nc6 3. Nc3 e5	289	58%40%
Janowski Variation D31 · 1. d4 d5 2. c4 e6 3. Nc3 a6	1,842	49%45%
Marshall Defense, Tan Gambit D06 · 1. d4 d5 2. c4 Nf6 3. cxd5 c6	192	48%44%
Normal Defense D35 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6	42,969	50%44%
Tarrasch Defense, Pseudo-Tarrasch D30 · 1. d4 d5 2. c4 e6 3. Nf3 c5	1,463	49%45%
Albin Countergambit, Normal Line D08 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3	5,343	50%45%
Albin Countergambit, Spassky Variation D08 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. e4	197	44%54%
Baltic Defense, Queen Attack Deferred D06 · 1. d4 d5 2. c4 Bf5 3. Nc3 e6 4. Qb3	347	52%46%
Chigorin Defense, Janowski Variation D07 · 1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. Nf3	604	54%42%
Chigorin Defense, Main Line, Alekhine Variation D07 · 1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. Qa4	5	60%20%20%
Exchange Variation (3… d5 4. cxd5) D35 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5	4,304	50%44%
Harrwitz Attack (3… Nf6 4. Bf4) D35 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4	2,793	50%45%
Modern Variation D50 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5	14,523	50%45%
Three Knights Variation (3… d5 4. Nc3) D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3	3,061	49%44%
Traditional Variation D30 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5	755	52%41%
Queen's Gambit Declined (4. Bg5 Be7) D53 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7	9,243	50%44%
Albin Countergambit, Tartakower Defense D08 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 c5	722	53%43%
Baltic Defense, Pseudo-Chigorin D06 · 1. d4 d5 2. c4 Bf5 3. Nc3 e6 4. Nf3 Nc6	227	41%56%
Baltic Defense, Pseudo-Slav D02 · 1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 c6	295	54%39%
Barmen Variation D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7	136	49%46%
Been-Koomen Variation D50 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c5	349	48%47%
Capablanca Variation (4. Bg5 h6) D30 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 h6	55	53%42%
Chigorin Defense, Modern Gambit D07 · 1. d4 d5 2. c4 Nc6 3. Nc3 dxc4 4. Nf3 Nf6	107	59%39%
Modern Variation, Knight Defense (4. Bg5 Nbd7) D51 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7	1,309	45%50%
Ragozin Defense D38 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4	849	52%41%
Semi-Tarrasch Defense (4. Nc3 c5) D40 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5	425	49%44%
Tarrasch Defense (4. cxd5 exd5) D32 · 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5	1,192	49%46%
Three Knights, Vienna Variation D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4	236	48%47%
Vienna Variation D30 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Bb4+	66	55%41%
Queen's Gambit Declined (4… Be7 5. Nf3) D53 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3	2,905	50%44%
Albin Countergambit, Fianchetto Variation D09 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3	771	51%43%
Albin Countergambit, Modern Line D08 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2	478	59%36%
Charousek Variation, Miladinovic Gambit D31 · 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. e4 dxe4 5. f3	2	100%
Exchange Variation, Positional Variation (4… exd5 5. Bg5) D35 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5	2,340	52%41%
Harrwitz Attack (4… Be7 5. Bf4) D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4	257	55%40%
Modern Variation, Heral Variation D53 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Bxf6	685	50%45%
Modern Variation, Knight Defense (4… Nbd7 5. e3) D51 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3	620	45%48%
Pseudo-Tarrasch Variation D50 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c5 5. cxd5	107	47%46%
Ragozin Defense, Alekhine Variation D38 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+	146	55%40%
Semi-Tarrasch Defense (4… c5 5. cxd5) D41 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5	215	47%44%
Semi-Tarrasch Defense, Pillsbury Variation (4… c5 5. Bg5) D40 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. Bg5	433	53%42%
Tarrasch Defense, Pseudo-Tarrasch Bishop Attack D30 · 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Bg5	11	64%36%
Vienna Variation, Quiet Variation D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e3	60	52%38%
Queen's Gambit Declined (5. Bg5 Be7) D53 · 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 dxc4 5. Bg5 Be7	20	55%35%
Albin Countergambit, Balogh Variation D08 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 Qe7	5	80%20%
Albin Countergambit, Fianchetto Variation, Be6 Line D09 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Be6	133	51%39%
Albin Countergambit, Fianchetto Variation, Bf5 Line D09 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bf5	62	42%56%
Albin Countergambit, Fianchetto Variation, Bg4 Line D09 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 Bg4	279	52%43%
Albin Countergambit, Janowski Variation D08 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 f6	20	70%30%
Albin Countergambit, Lasker Trap D08 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. e3 Bb4+ 5. Bd2 dxe3	439	31%65%
Austrian Defense, Haberditz Variation D06 · 1. d4 d5 2. c4 c5 3. cxd5 Nf6 4. e4 Nxe4 5. dxc5 Qa5+	8	88%13%
Baltic Defense, Argentinian Gambit D06 · 1. d4 d5 2. c4 Bf5 3. cxd5 Bxb1 4. Qa4+ c6 5. dxc6 Nxc6	21	57%33%
Exchange Variation, Positional Variation (5. Bg5 c6) D35 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6	766	52%40%
Lasker Defense (5. e3 Ne4) D53 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 Ne4	15	53%27%20%
Manhattan Variation D51 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 Bb4	57	40%53%
Modern Variation, Knight Defense (5. e3 c6) D51 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6	275	47%46%
Pseudo-Tarrasch Variation, Canal Variation D50 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c5 5. cxd5 Qb6	1	100%
Ragozin Defense, Vienna Variation D39 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4	15	67%13%20%
Semi-Tarrasch Defense (5. d4 e6) D41 · 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 d5 5. d4 e6	–
Spielmann Variation D30 · 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. e3 c6 5. Nbd2 g6	–
Three Knights Variation (5. e3 O-O) D37 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. e3 O-O	451	43%49%
Queen's Gambit Declined (5… Nbd7 6. e3) D52 · 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3	193	46%46%
Queen's Gambit Declined (5… Be7 6. e4) D53 · 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 dxc4 5. Bg5 Be7 6. e4	5	40%20%40%
Alekhine Variation D51 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. e4	4	75%25%
Capablanca Variation (5… Nbd7 6. e3) D30 · 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Bg5 c6 5. Nbd2 Nbd7 6. e3	–
Capablanca Variation, Anti-Cambridge Springs Variation D51 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. a3	8	25%12%63%
Exchange Variation, Reshevsky Variation (5… c6 6. Qc2) D36 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2	116	54%36%
Exchange Variation, Sämisch Variation D35 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. cxd5 exd5 6. Bf4	9	67%33%
Miles Variation D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. Qc2	2	50%50%
Modern Variation, Normal Line D55 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3	209	42%47%
Neo-Orthodox Variation (5… O-O 6. Rc1) D54 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Rc1	13	38%54%
Pseudo-Tarrasch Variation, Primitive Pillsbury Variation D50 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c5 5. Nf3 cxd4 6. Qxd4	6	50%50%
Semi-Tarrasch Defense (5… Nxd5 6. g3) D41 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. g3	3	33%67%
Semi-Tarrasch Defense, Exchange Variation (5… Nxd5 6. e4) D41 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e4	67	42%48%
Semi-Tarrasch Defense, Pillsbury Variation (5… Nxd5 6. e3) D41 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e3	14	21%22%57%
Semi-Tarrasch Defense, with e3 D40 · 1. d4 d5 2. c4 c5 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nc6 6. Bd3	–
Queen's Gambit Declined (6. e3 O-O) D53 · 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nc6 5. Bg5 Be7 6. e3 O-O	19	58%42%
Cambridge Springs Defense (6. e3 Qa5) D52 · 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5	83	43%48%
Exchange Variation (6. cxd5 exd5) D35 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 b6 5. Nc3 Bd6 6. cxd5 exd5	–
Harrwitz Attack, Fianchetto Defense D37 · 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bf4 O-O 6. e3 b6	23	43%48%
Harrwitz Attack, Orthodox Defense D37 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 O-O 6. e3 c6	81	56%38%
Harrwitz Attack, Two Knights Defense D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7	14	50%43%
Knight Defense, Alekhine Gambit D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Bg5 h6 6. Bh4 dxc4	2	50%50%
Neo-Orthodox Variation (6. e3 h6) D55 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6	35	46%14%40%
Orthodox Defense D60 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7	44	34%14%52%
Semmering Variation D30 · 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2 Nbd7 6. Bd3 c5	–
Stonewall Variation D30 · 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nbd2 Ne4 6. Bd3 f5	–
Tarrasch Defense (6. Bg5 Be7) D32 · 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. Bg5 Be7	22	59%41%
Westphalian Variation D38 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 Nbd7 6. e3 c5	5	40%60%
Queen's Gambit Declined (6… dxc4 7. Bxc4) D53 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 c6 6. e3 dxc4 7. Bxc4	4	25%75%
Anti-Tartakower Variation D55 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bxf6	6	67%16%17%
Cambridge Springs Defense (6… Qa5 7. cxd5) D52 · 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5 7. cxd5	16	50%44%
Cambridge Springs Defense, Capablanca Variation D52 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Qa5 7. Bxf6	29	72%24%
Harrwitz Attack, Two Knights Defense, Blockade Line D37 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5	3	67%33%
Neo-Orthodox Variation, Main Line D55 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3	33	52%39%
Orthodox Defense, Botvinnik Variation (6… Nbd7 7. Bd3) D60 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Bd3	11	27%64%
Orthodox Defense, Main Line (6… Nbd7 7. Rc1) D63 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1	8	63%38%
Orthodox Defense, Rauzer Variation D60 · 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Qb3	–
Orthodox Defense, Rubinstein Variation (6… Nbd7 7. Qc2) D61 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2	29	48%14%38%
Rochlin Variation D51 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. Rc1 Qa5 7. Bd2	1	100%
Semi-Tarrasch Defense (6… Nc6 7. Bg2) D41 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. g3 Nc6 7. Bg2	3	33%67%
Semi-Tarrasch Defense, Exchange Variation (6… Nxc3 7. bxc3) D41 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3	64	39%50%
Semi-Tarrasch Defense, Main Line D42 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3	4	100%
Cambridge Springs Defense, Rubinstein Variation D52 · 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5 7. Nd2 dxc4	10	50%40%
Cambridge Springs Defense, Yugoslav Variation D52 · 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5 7. cxd5 Nxd5	13	54%38%
Exchange Variation (7. Nf3 c6) D35 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. e3 Be7 5. cxd5 exd5 6. Bd3 O-O 7. Nf3 c6	–
Exchange Variation, Carlsen Variation D35 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 h6 7. Bh4 Bg4	3	100%
Harrwitz Attack, Main Line D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5	17	35%18%47%
Lasker Defense (7. e3 Ne4) D56 · 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 Ne4	8	50%50%
Orthodox Defense, Botvinnik Variation (7. Bd3 c6) D60 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Bd3 c6	2	50%50%
Orthodox Defense, Henneberger Variation (7. Rc1 a6) D63 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 a6	2	50%50%
Orthodox Defense, Main Line (7. Rc1 c6) D63 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6	3	67%33%
Orthodox Defense, Rubinstein Variation (7. Qc2 c5) D61 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2 c5	5	40%20%40%
Orthodox Defense, Rubinstein Variation (7. Qc2 c6) D61 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2 c6	4	75%25%
Semi-Slav, Abrahams Variation D31 · 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. a4 Bb4 6. e3 b5 7. Bd2 a5	13	31%62%
Semi-Slav, Junge Variation D31 · 1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nc3 dxc4 5. a4 Bb4 6. e3 b5 7. Bd2 Qb6	1	100%
Semi-Slav, Koomen Variation D31 · 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. e3 b5 6. a4 Bb4 7. Bd2 Qe7	–
Semi-Tarrasch Defense (7. exd4 Bd6) D40 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Bd6	–
Semi-Tarrasch Defense, Symmetrical Variation D40 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 Nc6 6. Bd3 Bd6 7. O-O O-O	–
Tarrasch Defense (7. Bxe7 Ngxe7) D32 · 1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. Bg5 Be7 7. Bxe7 Ngxe7	19	58%42%
Tarrasch Defense (7. Be2 Nc6) D32 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 c5 5. cxd5 exd5 6. Nc3 a6 7. Be2 Nc6	–
Tartakower Defense (7. e3 b6) D58 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 b6	14	79%14%
Uhlmann Variation D53 · 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. Rc1 dxc4	–
Queen's Gambit Declined (7… h6 8. Bh4) D56 · 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nc6 5. Bg5 Be7 6. e3 O-O 7. Rc1 h6 8. Bh4	–
Cambridge Springs Defense, Bogoljubow Variation D52 · 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5 7. Nd2 Bb4 8. Qc2	14	21%71%
Chigorin Defense, Exchange Variation, Costa's Line D07 · 1. d4 d5 2. c4 Nc6 3. cxd5 Qxd5 4. e3 e5 5. Nc3 Bb4 6. Bd2 Bxc3 7. Bxc3 exd4 8. Ne2	17	35%12%53%
Exchange Variation, Reshevsky Variation (7… Nbd7 8. Bd3) D36 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2 Be7 7. e3 Nbd7 8. Bd3	11	45%45%
Exchange Variation, Reshevsky Variation (7… O-O 8. Bd3) D36 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2 Be7 7. e3 O-O 8. Bd3	24	29%25%46%
Orthodox Defense, Bd3 Line (7… c6 8. Bd3) D66 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3	10	60%40%
Orthodox Defense, Henneberger Variation (7… a6 8. c5) D63 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 a6 8. c5	–
Orthodox Defense, Rubinstein Attack (7… c6 8. Qc2) D64 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Qc2	1	100%
Orthodox Defense, Rubinstein Variation (7… c6 8. a3) D61 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2 c6 8. a3	–
Orthodox Defense, Rubinstein Variation, Flohr Line D62 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Qc2 c5 8. cxd5	–
Orthodox Defense, Swiss, Carlsbad Variation D63 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 a6 8. cxd5	1	100%
Semi-Tarrasch Defense, Endgame Variation D41 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 cxd4 6. Qxd4 exd5 7. e4 dxe4 8. Qxd8+	2	100%
Semi-Tarrasch Defense, Krause Variation D50 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c5 5. Nf3 cxd4 6. Nxd4 e5 7. Ndb5 a6 8. Qa4	–
Albin Countergambit, Krenosz Variation D08 · 1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 Bg4 6. h3 Bxf3 7. Nxf3 Bb4+ 8. Bd2 Qe7	3	67%33%
Lasker Defense (8. Bh4 Ne4) D56 · 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nc6 5. Bg5 Be7 6. e3 O-O 7. Rc1 h6 8. Bh4 Ne4	–
Orthodox Defense, Henneberger Variation (8. c5 c6) D63 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 a6 8. c5 c6	–
Orthodox Defense, Main Line (8. Bh4 c5) D63 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 Nbd7 6. Nf3 O-O 7. Rc1 h6 8. Bh4 c5	2	100%
Orthodox Defense, Rubinstein Attack (8. Qc2 a6) D64 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Qc2 a6	–
Orthodox Defense, Rubinstein Attack (8. Qc2 Ne4) D64 · 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Qc2 Ne4	–
Orthodox Defense, Rubinstein Variation (8. Rd1 a6) D61 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2 c6 8. Rd1 a6	1	100%
Tartakower Defense, Exchange Variation D58 · 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. cxd5 exd5	3	100%
Tartakower Defense, Makogonov Exchange Variation D59 · 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. cxd5 Nxd5	10	30%60%
Cambridge Springs Defense, Argentine Variation D52 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Qa5 7. Nd2 Bb4 8. Qc2 O-O 9. Bh4	–
Exchange Variation, Reshevsky Variation (8… h6 9. Bh4) D36 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. Qc2 Be7 7. e3 O-O 8. Bd3 h6 9. Bh4	15	40%53%
Lasker Defense, Teichmann Variation D56 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 Ne4 8. Bxe7 Qxe7 9. Qc2	2	50%50%
Orthodox Defense, Bd3 Line (8… h6 9. Bh4) D66 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 h6 9. Bh4	4	75%25%
Orthodox Defense, Capablanca Variation D63 · 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 b6 8. cxd5 exd5 9. Bb5	–
Orthodox Defense, Henneberger Variation (8… c6 9. Bd3) D63 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 a6 8. c5 c6 9. Bd3	–
Orthodox Defense, Pillsbury Variation D63 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 b6 8. cxd5 exd5 9. Bd3	–
Orthodox Defense, Rubinstein Attack (8… a6 9. Qc2) D64 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. a3 a6 9. Qc2	–
Orthodox Defense, Rubinstein Attack (8… a6 9. cxd5) D65 · 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Qc2 a6 9. cxd5	–
Pillsbury Attack D55 · 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 d5 5. cxd5 exd5 6. Bg5 Be7 7. e3 O-O 8. Bd3 Bb7 9. Ne5	–
Orthodox Defense, Capablanca System D67 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5	3	100%
Orthodox Defense, Fianchetto Variation D66 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 5. Nf3 Be7 6. e3 Nbd7 7. Rc1 O-O 8. Bd3 dxc4 9. Bxc4 b5	–
Orthodox Defense, Rubinstein Variation (9. Bd3 Re8) D61 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Qc2 a6 8. cxd5 exd5 9. Bd3 Re8	–
Semi-Tarrasch Defense, San Sebastian Variation D41 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Qa5	26	42%50%
Exchange Variation, Chameleon Variation D35 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 Nbd7 8. Qc2 Re8 9. Nge2 Nf8 10. O-O-O	–
Harrwitz Attack (9… Qa5 10. a3) D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. Rd1 Qa5 10. a3	–
Harrwitz Attack (9… Qa5 10. O-O-O) D37 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. Qc2 Nc6 9. a3 Qa5 10. O-O-O	–
Lasker Defense, Main Line D57 · 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3	–
Orthodox Defense, Janowski Variation D67 · 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. h4	–
Orthodox Defense, Rubinstein Attack (9… exd5 10. Bd3) D65 · 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Qc2 a6 9. cxd5 exd5 10. Bd3	–
Semi-Tarrasch Defense, Levenfish Variation D40 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. e3 Nc6 6. Bd3 Bd6 7. O-O O-O 8. Qe2 Qe7 9. dxc5 Bxc5 10. e4	–
Orthodox Defense, Bd3 Line (10. Bxe7 Qxe7) D67 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7	3	100%
Tarrasch Defense, Stoltz Variation D34 · 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. g3 Nc6 6. Bg2 Nf6 7. O-O Be7 8. Nc3 O-O 9. Bg5 Be6 10. Rc1 b6	–
Anti-Tartakower Variation, Petrosian Variation D55 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bxf6 Bxf6 7. e3 O-O 8. Rc1 c6 9. Bd3 Nd7 10. O-O dxc4 11. Bxc4	–
Orthodox Defense, Alekhine Variation D67 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. Ne4	1	100%
Orthodox Defense, Main Line (10… Qxe7 11. O-O) D67 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O	2	100%
Semi-Tarrasch Defense, Kmoch Variation D41 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bb5	–
Lasker Defense, Bernstein Variation D57 · 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Qd6	–
Tartakower Defense (11. Rc1 Be6) D59 · 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Rc1 Be6	–
Lasker Defense, Bernstein Variation, Mar del Plata Gambit D57 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Rd8 12. c4 Be6	–
Orthodox Defense, Classical Variation (12. Rxc3 e5) D68 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5	1	100%
Orthodox Defense, Classical Variation (12… e5 13. Qb1) D68 · 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. Qb1	–
Orthodox Defense, Classical Variation (12… e5 13. Qc2) D68 · 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. Qc2	–
Lasker Defense, Russian Variation D56 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. Qc2 Nf6 10. Bd3 dxc4 11. Bxc4 c5 12. O-O Nc6 13. Rfd1 Bd7	–
Orthodox Defense, Classical Variation (14. Nxe5 Qxe5) D69 · 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. dxe5 Nxe5 14. Nxe5 Qxe5	1	100%